straight up im new to diesels but as of tonight theres like a particular whistle/ scratching noise. It doesnt make it at idle just when you are on the pedal at all. It holds boost fine and shifts great still but its hard to catch. Sounds like the turbo is really slow at spooling? idk and it idles fine its just that wierd scratching/whistle noise

The turbo on a 7.3 is fairly slow to spool up - when you say "shifts great but its hard to catch" - are you talking about trouble getting it in gear on a manual? You could have a throw-out bearing heading south. Let us know exactly what you are driving and maybe we could help more.

haha no im mean its hard to catch the noise. my truck is an automatic. no throw out bearing. sorry for not being clear. performance is still great though. i think it just might be me being freaked out by not knowing diesels that well yet.

One thing it might be - the 7.3 has an exhaust back pressure valve that activates in cold weather. Makes the truck sound like a vacuum cleaner until it warms up. Other than that, I've found that you're MPG is the best determinate if everything is running ok. I bought a ScanGauge II, so I can monitor my instant MPG, and with that I've been able to stay above 19 MPG

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:

Password

Please enter a password for your user account. Note that passwords are case-sensitive.

Password:

Confirm Password:

Email Address

Please enter a valid email address for yourself.

Email Address:

Log-in

User Name

Remember Me?

Password

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.

AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.